#!/usr/bin/env python
# -*- coding: utf8 -*-

import RPi.GPIO as GPIO, mfrc522, signal

continue_reading = True

# Capture SIGINT for cleanup when the script is aborted
def end_read(signal, frame):
    global continue_reading
    print("Ctrl+C captured, ending read.")
    continue_reading = False
    GPIO.cleanup()

# Hook the SIGINT
signal.signal(signal.SIGINT, end_read)

# Create an object of the class MFRC522
MIFAREReader = MFRC522.MFRC522()

# This loop keeps checking for chips. If one is near it will get the UID and authenticate
while continue_reading:
    
    # Scan for cards    
    (status, TagType) = MIFAREReader.MFRC522_Request(MIFAREReader.PICC_REQIDL)

    # If a card is found
    if status == MIFAREReader.MI_OK:
        print "Card detected"
    
    # Get the UID of the card
    (status, uid) = MIFAREReader.MFRC522_Anticoll()

    # If we have the UID, continue
    if status == MIFAREReader.MI_OK:

        # Print UID
        print("[+] Card read UID: " + ",".join(str(u) for u in uid) + ".")
    
        # This is the default key for authentication, change once detected.
        key = [0xFF,0xFF,0xFF,0xFF,0xFF,0xFF]
        
        # Select the scanned tag
        MIFAREReader.MFRC522_SelectTag(uid)

        # Dump the data
        MIFAREReader.MFRC522_DumpClassic1K(key, uid)

        # Stop
        MIFAREReader.MFRC522_StopCrypto1()
